#background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    min-width: 1000px;
    background-repeat: no-repeat;
    background: linear-gradient(to bottom, #009 0%, #1E9FFF 100%);
    background-size: cover;
    -webkit-background-size: cover;
    -o-background-size: cover;
}

.filter {
    background: #009;
    animation: colorChange 30s ease-in-out infinite;
    animation-fill-mode: both;
    mix-blend-mode: overlay;
    z-index: -2;
}

@keyframes colorChange {
    0%, 100% {
        opacity: .2;
    }
    50% {
        opacity: .7;
    }
}

html {
    overflow-y: scroll;
}
body {
    text-align: center;
    font-size: 16px;
}

.userInfo-body {
    width: 1000px;
    height: 640px;
    margin: 0 auto;
    margin-top: 100px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    z-index: 1;

}

.headimg-info {
    text-align: center;
}


.headimg-view {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-top: 50px;
}

.headimg-info button {
    display: block;
    margin: 0 auto;
    margin-top: 30px;
}


.avatar-btns button {
    height: 35px;
}

#imageHead {
    border-radius: 50%;
}

.user-info {
    margin: 0 auto;
    width: 500px;
    text-align: left;
    padding: 50px;
}

.info-list {
    margin-top: 20px;
    margin-left: 60px;
}

.info-list span {
    font-size: 18px;
}

.info-list input {
    background: rgba(255, 255, 255, 0.5);
    border: none;
    outline: none;
    margin: 0;
    padding: 0 5px;
    font-size: 18px;
    line-height: 30px;
    white-space: nowrap;
    text-align: left;
    overflow: hidden;
}

#user-mail, #input-user-name, #age {
    width: 200px;
}

.sex-info {
    margin-left: 18px;
}

#major {
    background: rgba(255, 255, 255, 0.5);
    font-size: 18px;
    width: 200px;
    border: none;
    outline: none;
    margin: 0;
    padding: 0 5px;
    font-size: 18px;
    line-height: 30px;
    white-space: nowrap;
    text-align: left;
    overflow: hidden;
}
